CN101626947B - Rubber track - Google Patents
Rubber track Download PDFInfo
- Publication number
- CN101626947B CN101626947B CN200880007194.0A CN200880007194A CN101626947B CN 101626947 B CN101626947 B CN 101626947B CN 200880007194 A CN200880007194 A CN 200880007194A CN 101626947 B CN101626947 B CN 101626947B
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- lug
- mentioned
- rubber belt
- belt track
- row
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Abstract
A rubber track has lugs (12A, 12B) formed on its outer peripheral surface in two rows of a first row and a second row that are arranged with the same pitch in the circumferential direction, and the rubber track also has guide juts formed on its inner peripheral surface at the equal intervals. Ends (13A, 13B), located in the center part in the lateral direction of the track, of the lugs (12A, 12B) are superposed on a projection area of a guide jut (16). Because the ends (13A, 13B) are superposed on the projection area of the guide jut (16) having high rigidity, the ends bend less than other portions when the track is wrapped around a sprocket etc. This prevents concentration of strain at the ends (13A, 13B), and as a result, cracks in the ends (13A, 13B) of the lugs (12A, 12B) are prevented.
Description
Technical field
The present invention relates to a kind of rubber belt track, particularly be provided with the lug of convex at outer peripheral face, be provided with the rubber belt track of ring-type of the direction protrusion of convex at inner peripheral surface.
Background technology
Usually, rubber belt track is such structure: bury steel cord equal strength member underground along the length direction of its ring-type, at the lug of outer peripheral face formation convex, also form the direction protrusion of convex on inner peripheral surface, the structure (for example, with reference to patent documentation 1) that contacts with treads such as ground surfaces.
In rubber belt track as described above, the direction protrusion of inner peripheral surface side is larger with on every side planar section phase specific rigidity in the time of on being wound in sprocket wheel etc., therefore, the strain that is equivalent to the projection section between the direction protrusion at outer circumferential side becomes large, in contrast to this, higher in the projection section rigidity that is equivalent to the direction protrusion part, therefore, roughly close to the plane.
Therefore, if the lug of outer circumferential side across two direction protrusion view fields, then the front end of lug, be that the strain of most peripheral part also further becomes large.Thus, may be because near the flexing fatigue that causes of the coiling on the sprocket wheel etc. and the root of lug, produce be full of cracks repeatedly.
In addition, when reeling to sprocket wheel etc., the front end of lug is positioned at situation outside the view field of direction protrusion to be compared curvature and becomes large with the situation of the view field that is positioned at direction protrusion, and therefore, it is large that the strain of lug leading section becomes, and what produce be full of cracks may become large.
The present invention makes in view of above-mentioned conventional art, and its purpose is to provide a kind of rubber belt track that is difficult to produce be full of cracks at outer peripheral face.
Patent documentation 1: TOHKEMY 2000-177568 communique
Patent documentation 2: TOHKEMY 2004-268655 communique
Summary of the invention
The present invention considers above-mentioned situation, and its purpose is to provide a kind of rubber belt track that is difficult to produce be full of cracks at outer peripheral face.
The rubber belt track of the 1st technical scheme of the present invention is by the lug that circumferentially forms first row and secondary series two row convexs on the outer peripheral face edge with same pitch, consist of at the ring-shaped rubber elastic body of inner peripheral surface with the direction protrusion that uniformly-spaced is provided with convex, it is characterized in that, above-mentioned two row lugs are arranged in respectively not homonymy centered by the Width central authorities of above-mentioned rubber belt track, from with the direction of outer peripheral face quadrature, overlapping on each above-mentioned direction protrusion have an above-mentioned first row lug and an above-mentioned secondary series lug, from with the direction of outer peripheral face quadrature, the leading section of the leading section of the rubber belt track Width center side of above-mentioned first row lug and the rubber belt track Width center side of above-mentioned secondary series lug is only overlapping with an above-mentioned direction protrusion.
In said structure, only overlapping with a direction protrusion by becoming a lug, and from the direction of outer peripheral face quadrature see above-mentioned first row lug and above-mentioned secondary series lug rubber belt track Width center side leading section only with a structure that above-mentioned direction protrusion is overlapping, can make the rubber belt track that is difficult to produce be full of cracks at outer peripheral face.
In the rubber belt track of the 1st technical scheme of the invention described above, from the direction of outer peripheral face quadrature, the end of the rubber belt track Width center side of above-mentioned first row lug and above-mentioned secondary series lug is only overlapping with an above-mentioned direction protrusion.
In said structure, when reeling to sprocket wheel etc., because the bending resistance of rubber belt track reduces, therefore, can make the less rubber belt track of propulsive effort loss.
In the rubber belt track of the 1st technical scheme of the invention described above, above-mentioned first row lug and above-mentioned secondary series lug also can be arranged as half pitch that mutually staggers.
In said structure, utilize being staggered of lug can make the less rubber belt track of vibration.
In the rubber belt track of the 1st technical scheme of the invention described above, from with the direction of outer peripheral face quadrature, the end of the length direction of above-mentioned first row lug and above-mentioned secondary series lug, be that end and the common above-mentioned direction protrusion of rubber belt track Width center side is overlapping.
In said structure, can prevent that near the strain in end of the rubber belt track Width center side of lug from concentrating, can prevent be full of cracks.
In the rubber belt track of the 1st technical scheme of the invention described above, the pitch that above-mentioned lug and above-mentioned direction protrusion are arranged between the lug equates with pitch between the direction protrusion.
In said structure, when injection is used to form the rubber of lug and direction protrusion, can prevent the fluctuation of laminated section, can make the less rubber belt track of strain.
In the rubber belt track of the 1st technical scheme of the invention described above, lug has arbitrary shape of the second short shape of above-mentioned the first shape of the Width Length Ratio of the first shape and above-mentioned rubber belt track, and the lug of the lug of the first shape and the second shape can constitute along circumferential alternative arrangement.The mud that is attached on the lug is come off, can improve the propulsive effort of rubber belt track.In the short lug of Width, owing to broaden at the bottom of the lug in the lug outside, therefore, this part is the starting point that mud falls.
In the rubber belt track of said structure, also the part in the Width outside of the lug of the first shape can be formed the chamfering with respect to peripheral, oblique.By carrying out the chamfering with respect to peripheral, oblique near the Width outboard end to the lug of the first shape, can relax lug to the impact on ground, the result can prevent root that damages crops etc., therefore, can seek to increase harvest yield.
The present invention is said structure, can become the rubber belt track that is difficult to produce be full of cracks at outer peripheral face.
Description of drawings
Fig. 1 is the block diagram of expression rubber belt track of the present invention.
Fig. 2 A is the birds-eye view of the rubber belt track of expression the 1st embodiment of the present invention.
Fig. 2 B is the lateral plan of the rubber belt track of expression the 1st embodiment of the present invention.
Fig. 3 A is the birds-eye view of the rubber belt track of expression the 2nd embodiment of the present invention.
Fig. 3 B is the birds-eye view of the rubber belt track of expression the 2nd embodiment of the present invention.
Fig. 4 is the birds-eye view that represents rubber belt track in the past.
Fig. 5 is the birds-eye view that represents rubber belt track in the past.
Fig. 6 A is the lateral plan of the rubber belt track of expression the 3rd embodiment of the present invention.
Fig. 6 B is rubber belt track and the lateral plan that represents accordingly of the rubber belt track of the 3rd embodiment of the present invention that makes in the past.
Fig. 7 A is the lateral plan of rubber belt track that expression will the 3rd embodiment of the present invention state of stress when being wound in sprocket wheel etc. and going up.
Fig. 7 B is the lateral plan that rubber belt track that expression will be in the past was wound in the state of stress when upper such as sprocket wheel.
Fig. 8 is the birds-eye view of variation of the rubber belt track of expression the 2nd embodiment of the present invention.
Fig. 9 is the birds-eye view of variation of the rubber belt track of expression the 1st embodiment of the present invention.
Description of reference numerals
10, rubber belt track; 12, lug; 13, end; 14, steel cord; 16, direction protrusion; 18, rubber; 20, rubber belt track; 30, rubber belt track.
The specific embodiment
The 1st embodiment
Below, illustrate in greater detail the present invention with embodiment.
Fig. 1 represents the rubber belt track of the 1st embodiment of the present invention.Fig. 1 is the block diagram of the rubber belt track of expression present embodiment.
As shown in Figure 1, do not have arbor, in the so-called coreless rubber crawler 10, cover by along the steel cord 14 as tension element of circumferentially reeling with rubber 18, be formed integrally as endless belt-shaped rubber belt track 10.
Along the lug 12 that circumferentially is arranged with regularly the convex that is used to form ground plane, along with rubber belt track 10 is driven, catch ground and apparatus body moved by lug 12 at outer circumferential side for rubber belt track 10.
Dispose regularly the direction protrusion 16 of convex in interior all sides of rubber belt track 10.Rubber belt track 10 is wound on the not shown sprocket wheel of being located at apparatus main body side, and direction protrusion 16 fastens with recess with the driving of being located at sprocket surface, by driving rubber belt track 10 from the sprocket wheel transmission of drive force that is rotated.
In the past, have in the lug configuration of rubber belt track 100 of conductor projection 116 at inner peripheral surface, shown in Fig. 4,5, at the projection section of direction protrusion 116 (outer peripheral face corresponding with direction protrusion 116), direction protrusion 116 and the lug 112 all rigidity than other parts are high, be difficult to bending in the time of on being wound in sprocket wheel etc., strain will inevitably concentrate on other parts, be the part etc. of white arrow 108, may produce be full of cracks at outer peripheral face.
In addition, when direction protrusion 116 is overlapping with the side 112A of Width central authorities of lug 112, shown in figure bend section, in the overlapping situation of a lug 112 and a plurality of direction protrusion 116, between the projection section and part in addition of the higher direction protrusion 116 of rigidity, lug 112 self also produces strain, may produce be full of cracks.
Below describe about the lug configuration of the rubber belt track of embodiments of the invention.
Fig. 2 A and Fig. 2 B represent the lug shape of the rubber belt track of the 1st embodiment of the present invention.Fig. 2 A represents the birds-eye view of the rubber belt track 10 seen from outer peripheral face, and Fig. 2 B represents the lateral plan of the rubber belt track 10 seen from Width.
Shown in Fig. 2 A, on the rubber belt track 10 of the 1st embodiment of the present invention, along circumferential alternative arrangement the short lug 12A of the Width lug 12B long with compare Width with lug 12A arranged.
At this moment, the projection section of end 13A, the 13B of the Width center side of lug 12A, 12B and direction protrusion 16 (dotted portion among the figure) is overlapping.Because the projection section of the direction protrusion 16 that end 13A, 13B and rigidity are higher is overlapping, therefore, compare bending in the time of on being wound in sprocket wheel etc. with other parts less, and strain is not concentrated in end 13A, 13B.Thus, can prevent from producing be full of cracks at the end of lug 12A, 12B 13A, 13B.
In addition, lug 12A or 12B are only overlapping with a direction protrusion 16, the part except end 13A, 13B of lug 12A, 12B, are that side end 11A, the 11B of length direction is not overlapping with a plurality of direction protrusion 16 yet.Thus, can prevent from producing be full of cracks because of the strain that side end 11A, 11B and direction protrusion 16 produce when overlapping at side end 11A, 11B and vicinity thereof.
In addition, the end 13A-1, the 13B-1 that are set to the Width center side of two lug 12A, the 12B that are listed as are located at the position overlapping with same direction protrusion 16-1 (central authorities among the figure).Thus, can make progress uniformly-spaced to dispose the higher part of rigidity and lower part in the week of rubber belt track 10, what therefore, produce in the time of reducing on being wound in sprocket wheel etc. subdues resistance, the loss in efficiency in the time of suppressing driving by the driving torque that reduces rubber 10.
In addition, centered by Width central authorities along the lugs 12 that circumferentially disposed two row also left-right symmetric not, but interconnected, the so-called pitch that staggers of two row lugs (1/3 pitch that in Fig. 2 A, staggers, but certainly also be not limited to this.Also can be arranged as 1/2 pitch that staggers (half pitch)).Thus, become another row lug 12 and cover the structure that is configured in the blank between a lug that lists 12 and the next lug 12, therefore, can be suppressed at the vibration that blank parts periodically produces.
In addition, as shown in Figure 9, long lug 12B, the 12B-1 of Width be near the chamfering of making the Width outboard end with respect to peripheral, oblique, thereby can relax lug to the impact on ground.Like this, also can prevent root that damages crops etc.
The 2nd embodiment
Below describe about the lug configuration of the rubber belt track of another embodiment of the present invention.
Fig. 3 A and Fig. 3 B represent the lug shape of the rubber belt track of the 2nd embodiment of the present invention.Fig. 3 A represents the birds-eye view of the rubber belt track 20 seen from outer peripheral face, and Fig. 3 B represents the lateral plan of the rubber belt track 20 seen from Width.
As shown in Figure 3A, the edge circumferentially alternately is arranged with the short lug 12A of the Width lug 12B long with compare Width with lug 12A on the rubber belt track 20 of the 2nd embodiment of the present invention.
In addition, following point is also identical with the 1st embodiment: lug 12A or 12B are only overlapping with a direction protrusion 16, lug 12A, 12B except end 13A, part beyond the 13B, be the side end 11A of length direction, the part of 11B is not overlapping with a plurality of direction protrusion 16 yet, be set to the lug 12A of two row, the end 13A-1 of the Width center side of 12B, 13B-1 is arranged on the position overlapping with same direction protrusion 16-1 (central authorities among the figure), centered by Width central authorities along circumferentially to be configured in two lugs that list 12 be not left-right symmetric, 1/3 pitch but two row lugs stagger mutually, so-called interconnected.In addition, be 1/3 pitch that staggers in Fig. 3 A, but certainly be not limited to this.Also can be arranged as 1/2 pitch that staggers (half pitch).
In the present embodiment, for the circumferential distance (white arrow 22 among the figure) of end 13A, the 13B of the Width center side that increases lug 12A, 12B, with the end of end 13A, the 13B of the Width center side of lug 12A, 12B along circumferentially cutting shortlyer.Thus, be difficult to be detained mud in the Width central authorities of rubber belt track 20, become the good structure of spoil disposal.
In addition, in the embodiment shown in Fig. 3 A, the end (13A-1,13B-1) of two 13A of square end section, the 13B of the Width center side of lug 12A, 12B along circumferentially cutting shortlyer, but also can only be cut a wherein row lug as shown in Figure 8.
In addition, in the present embodiment, in order to increase circumferential distance with the end of two 13A of square end section, the 13B of the Width center side of lug 12A, 12B along circumferentially cutting shortlyer, but make chamfering by end 13A, the 13B with the Width center side of lug 12A, 12B, also can obtain same effect.
The 3rd embodiment
Fig. 6 A and Fig. 6 B represent rubber belt track and the lug of the rubber belt track of the 3rd embodiment of the present invention and the position relationship of direction protrusion in the past.
Fig. 6 A represents the lateral plan of rubber belt track 101 in the past, and Fig. 6 B represents the lateral plan of the rubber belt track 20 of present embodiment.
In the past, when forming lug 112 and direction protrusion 116 with rubber 118, when injecting rubber 118, owing to act on the ejaculation pressure of the rubber 118 on the steel cord 114, may make on the steel cord 114 and produce fluctuation.
As shown in Figure 6A, in lug 112 and direction protrusion 116 edge situations about circumferentially staggering, when forming lug 112 and direction protrusion 116 by rubber 118, if flowing of the rubber 118 that the expansion of rubber 118 produces during because of sulfuration is 130A/130B, then owing to have flowing of rubber 118 and produce fluctuation at steel cord 114 easily in the direction that steel cord 114 is risen and fallen.
In addition, fluctuation tends to concentrate on both the narrow and small scope (circle is inner among the figure) in gap at the overlapping position of lug 112 and direction protrusion 116, and when reeling to sprocket wheel etc., the strain of rubber 18 concentrates on above-mentioned position easily, may produce be full of cracks.
That is, in rubber belt track in the past, shown in Fig. 7 A, in the time of on being wound in sprocket wheel etc., because strain concentrates on the narrow and small scope (108A among the figure) of rubber belt track 101 outer peripheral faces, therefore, produce be full of cracks in this part easily.
Relative therewith, shown in Fig. 6 B, if lug 12 and direction protrusion 16 upwards roughly align in week at top separately, mobile 32A and the 32B of the rubber 18 that rubber 18 expansions cause during then because of sulfuration do not press steel cord 14 along circumferential flow along specific direction.Thus, shown in Fig. 7 B, the strain of rubber 18 does not concentrate on a position, does not worry to produce be full of cracks at the outer peripheral face of rubber belt track 30.
More than, enumerate embodiment embodiments of the present invention have been described, but these embodiments are examples, can in the scope that does not break away from purport, carry out various changes.For example, be illustrated as an example of coreless rubber crawler example, but also can be for having the rubber belt track of arbor.
In addition, interest field of the present invention is not limited to these embodiments, certainly can implement in every way in the scope that does not break away from purport of the present invention.
Industrial applicibility
The present invention can be applied to be provided with the lug of convex at outer peripheral face, be provided with the rubber belt track of ring-type of the direction protrusion of convex at inner peripheral surface, is widely used in the mobile devices that use rubber belt track.
Claims (5)
1. rubber belt track, its by outer peripheral face along circumferentially with same pitch be formed with first row and secondary series two row convexs lug, consist of at the ring-shaped rubber elastic body of inner peripheral surface with the direction protrusion that uniformly-spaced is provided with convex,
Above-mentioned two row lugs are arranged in respectively not homonymy centered by the Width central authorities of above-mentioned rubber belt track,
From with the direction of outer peripheral face quadrature, overlapping on each above-mentioned direction protrusion have an above-mentioned first row lug and an above-mentioned secondary series lug,
From with the direction of outer peripheral face quadrature, the leading section of the leading section of the rubber belt track Width center side of above-mentioned first row lug and the rubber belt track Width center side of above-mentioned secondary series lug is only overlapping with an above-mentioned direction protrusion,
Above-mentioned lug has arbitrary shape of the second short shape of above-mentioned the first shape of the Width Length Ratio of the first shape and above-mentioned rubber belt track, and the lug of the lug of above-mentioned the first shape and above-mentioned the second shape is by along circumferential alternative arrangement,
The part in the Width outside of the lug of above-mentioned the first shape has been carried out the chamfering with respect to peripheral, oblique,
The leading section of the leading section of the rubber belt track Width center side of above-mentioned first row lug and the rubber belt track Width center side of above-mentioned secondary series lug have the ground area with the overlapping part of above-mentioned direction protrusion.
2. rubber belt track according to claim 1, from the direction of outer peripheral face quadrature, the end of the rubber belt track Width center side of above-mentioned first row lug and above-mentioned secondary series lug is only overlapping with an above-mentioned direction protrusion.
3. rubber belt track according to claim 1 and 2, above-mentioned first row lug and the above-mentioned secondary series lug half pitch ground that mutually staggered is arranged.
4. rubber belt track according to claim 1, from the direction of outer peripheral face quadrature, the end of the rubber belt track Width center side in the end of the length direction of above-mentioned first row lug and above-mentioned secondary series lug and common above-mentioned direction protrusion are overlapping.
5. the pitch that rubber belt track according to claim 1, above-mentioned lug and above-mentioned direction protrusion are arranged between the lug equates with pitch between the direction protrusion.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP055665/2007 | 2007-03-06 | ||
| JP2007055665A JP4922017B2 (en) | 2007-03-06 | 2007-03-06 | Rubber crawler |
| JP2007108990A JP5189314B2 (en) | 2007-04-18 | 2007-04-18 | Rubber crawler |
| JP108990/2007 | 2007-04-18 | ||
| PCT/JP2008/054078 WO2008108439A1 (en) | 2007-03-06 | 2008-03-06 | Rubber track |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101626947A CN101626947A (en) | 2010-01-13 |
| CN101626947B true CN101626947B (en) | 2013-05-01 |
Family
ID=39834266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880007194.0A Expired - Fee Related CN101626947B (en) | 2007-03-06 | 2008-03-06 | Rubber track |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4922017B2 (en) |
| CN (1) | CN101626947B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103612679A (en) * | 2013-12-12 | 2014-03-05 | 青岛开世密封工业有限公司 | Caterpillar band |
| WO2017126680A1 (en) * | 2016-01-22 | 2017-07-27 | 株式会社ブリヂストン | Elastic track belt |
| JP6758205B2 (en) * | 2017-01-20 | 2020-09-23 | 株式会社ブリヂストン | Elastic crawler |
| JP6866739B2 (en) * | 2017-04-13 | 2021-04-28 | 住友ゴム工業株式会社 | Rubber crawler |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002046029A1 (en) * | 2000-12-07 | 2002-06-13 | Bridgestone Corporation | Rubber crawler |
| JP2002308163A (en) * | 2001-04-09 | 2002-10-23 | Ohtsu Tire & Rubber Co Ltd :The | Projection drive type rubber roller |
| JP2003252259A (en) * | 2002-02-27 | 2003-09-10 | Ohtsu Tire & Rubber Co Ltd :The | Elastic crawler |
| JP2006069416A (en) * | 2004-09-03 | 2006-03-16 | Sumitomo Rubber Ind Ltd | Elastic crawler |
| JP2007038908A (en) * | 2005-08-04 | 2007-02-15 | Bridgestone Corp | Sprocket structure of core-less crawler |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS574479A (en) * | 1980-11-17 | 1982-01-11 | Bridgestone Corp | Elastic endless tracked belt |
| JP4181314B2 (en) * | 2001-04-16 | 2008-11-12 | 株式会社ブリヂストン | Rubber crawler |
| JP3919669B2 (en) * | 2003-01-10 | 2007-05-30 | 株式会社クボタ | Crawler travel device |
| JP4549138B2 (en) * | 2004-09-03 | 2010-09-22 | 住友ゴム工業株式会社 | Elastic crawler |
-
2007
- 2007-03-06 JP JP2007055665A patent/JP4922017B2/en not_active Expired - Fee Related
-
2008
- 2008-03-06 CN CN200880007194.0A patent/CN101626947B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002046029A1 (en) * | 2000-12-07 | 2002-06-13 | Bridgestone Corporation | Rubber crawler |
| JP2002308163A (en) * | 2001-04-09 | 2002-10-23 | Ohtsu Tire & Rubber Co Ltd :The | Projection drive type rubber roller |
| JP2003252259A (en) * | 2002-02-27 | 2003-09-10 | Ohtsu Tire & Rubber Co Ltd :The | Elastic crawler |
| JP2006069416A (en) * | 2004-09-03 | 2006-03-16 | Sumitomo Rubber Ind Ltd | Elastic crawler |
| JP2007038908A (en) * | 2005-08-04 | 2007-02-15 | Bridgestone Corp | Sprocket structure of core-less crawler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101626947A (en) | 2010-01-13 |
| JP2008213715A (en) | 2008-09-18 |
| JP4922017B2 (en) | 2012-04-25 |
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